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ihavemathquestions

Solve the system by graphing.

  • one year ago
  • one year ago

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  1. ihavemathquestions
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    • one year ago
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  2. surdawi
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    solve both equations for y then i will help

    • one year ago
  3. ihavemathquestions
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    ok one minute

    • one year ago
  4. ihavemathquestions
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    y = 2

    • one year ago
  5. surdawi
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    -3x - y = -10 4x - 4y = 8 ********************** (-3x - y = -10)*4=-12x - 4y = -40 4x - 4y = 8 ****************** -12x - 4y = -40 4x - 4y = 8 -----------------------subtract (-12x - 4x) + (-4y - -4y) = (-40 - 8) -16 x = -48 x = -48/-16 = 3 plug it in on of the equations and solve for y what do you get?

    • one year ago
  6. ihavemathquestions
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    uh....

    • one year ago
  7. surdawi
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    -3x - y = -10 plug in x = 3 what do you get?

    • one year ago
  8. ihavemathquestions
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    9-y=-10 10-y=9

    • one year ago
  9. surdawi
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    -3*3=?

    • one year ago
  10. ihavemathquestions
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    -9

    • one year ago
  11. surdawi
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    ok where did you get the 9 up there?

    • one year ago
  12. ihavemathquestions
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    idk ugh im going to cry

    • one year ago
  13. surdawi
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    then retry :p

    • one year ago
  14. surdawi
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    you can cry later

    • one year ago
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